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Measurement Principle    Electrochemical sensor  
Measurement Range      0.000mg/L～1.500 mg/L
Resolution    0.001 mg/L
Accuracy:
Measurement Error, in relation to the ethanol standard    Measurement Range C / ( mg/L)    Measurement Error
    C<0.400    ±0.020 mg/L
    0.400≤C<1.000    ±5%
    C≥1.000    ±20%
Accuracy:
Repeatability    Measurement Range C / ( mg/L)    Measurement Error
    C<0.400    0.007 mg/L
    0.400≤C<1.000    1.75％
    C≥1.000    6％
Calibration    Every 6 months
Temperature range - operation    0℃～40℃
Temperature range –
storage    －20℃～70℃
Optimum Storage Conditions    Temperature：20℃±5℃ Humidity：<80%RH Pressure：86 kpa～106 kpa
No vapor or electromagnetic disturbances in the environment are influencing the normal working conditions of the device
Blowing Time     2.5seconds（breath flow： ≥20L/min）
Display    128X64 black and white screen
Dimension(LXWXT)    134mm）×65mm ×30mm
Batteries     7 alkaline dry batteries  1.5AAA*3
Weight     Approx. 116g (including battery)